CVE-2026-54594 OmniBlocks: Spamming in Discussions tab possible via disc.yml
Attackers can spam discussions by repeatedly editing off-topic issues, causing duplicate discussion creation in OmniBlocks workflows.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54594?
CVE-2026-54594 is a medium-severity vulnerability in OmniBlocks monorepo, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
OmniBlocks is a monorepo for the OmniBlocks project. Prior to the June 6, 2026 workflow remediation, .github/workflows/disc.yml runs for the issues opened event and the issues edited event and invokes the createDiscussion mutation whenever an issue is classified as off-topic, without recording that the issue was already converted or otherwise suppressing duplicate runs. A user who creates one off-topic issue and repeatedly edits its description before conversion completes can therefore cause multiple discussions to be created for the same issue, producing discussion spam and additional moderation work. This issue is fixed with commit 627e0f0a16a7d74b09128106b57dd7e85d2545df.
Weakness: CWE-799
Which versions are affected by CVE-2026-54594?
How do I fix CVE-2026-54594?
No fix has been published for CVE-2026-54594 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-54594 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54594 exists.
Sources
Also known as GHSA-pq9c-3595-72jq.